His Highness the Amir Sheikh Sabah Al- Ahmad Al-Jaber Al-Sabah sent a cable Wednesday to Saudi King Salman bin Abdulaziz Al-Saud, congratulating him on the culmination of the Hajj season. In his cable, His Highness the Amir conveyed his heartiest congratulations on a successful and smooth Hajj season, attributing it to the diligent efforts of the Saudi government, and wished the Kingdom increased development and prosperity.

For the first time in nearly three decades, Iran’s 64,000 pilgrims are not attending the Hajj in Sunni-dominated Saudi Arabia after the two regional rivals failed to agree on security and logistics. “Combat this sectarian divide between Muslims. Islam is one and only one religion,” Faisal said in Mina, a pilgrimage site on the edge of Makkah. Saudi Arabia is home to Islam’s holiest sites, which pilgrims visit during the Hajj, and is the seat of Sunni Islam which predominates in the Muslim world.

The kingdom is founded on the teachings of 18th century Sunni preacher Sheikh Mohammed bin Abdul Wahhab, whose ideas have themselves been decried by critics as a driving force behind sectarianism and an inspiration to violent jihadists. Iran is the world’s major Shiite power, and the two nations are at odds over a number of regional issues including the wars in Syria and Yemen.

The rivals have no diplomatic relations and have been engaged in a slanging match over the Hajj since last week. “Islam is unique. There is no multiple Islam,” said Faisal, president of the Central Hajj Committee. He said this year’s Hajj occurred without incident despite “the lies and allegations… of those who wanted to place in doubt the capacity of the kingdom to serve the pilgrims.” Among its concerns over Iranian participation in this year’s Hajj, Riyadh said Tehran had demanded the right to organise demonstrations.

Tehran in turn accused Riyadh of “blocking the path leading to Allah”. Security was one of the contentious issues following last year’s Hajj stampede which, according to foreign officials, killed roughly 2,300 people. Iran reported the largest number of victims, at 464.

Just days before the Hajj began on Saturday Iran’s supreme leader Ayatollah Ali Khamenei questioned Saudi Arabia’s right to manage Islam’s holiest sites. He called the Saudi ruling family “puny Satans” who had politicised the pilgrimage. Khamenei also said Saudi authorities “murdered” the stampede victims. Saudi Arabia’s Grand Mufti Abdulaziz al-Sheikh retaliated by telling a newspaper that Iranians “are not Muslims”.

Reiterating a point made on Tuesday by King Salman, Faisal said Saudi Arabia does not interfere in Iran’s internal affairs “but we don’t permit the holy sites and the Hajj to be used for political ends”.

More than 1.8 million faithful from around the world have been attending the annual pilgrimage. Saudi King Salman said the kingdom rejects any attempt to play politics with the Hajj. For the first time in nearly three decades, Iran’s 64,000 pilgrims are not attending the Hajj in Saudi Arabia after the two regional rivals failed to agree on security and logistics. Among its concerns, Riyadh said Tehran had demanded the right to organise demonstrations.

“The kingdom categorically rejects that the Hajj serves any political purpose,” Salman, said in a brief address to international VIPs attending the pilgrimage. Tehran had accused Riyadh of “blocking the path leading to Allah.” Among the contentious issues was security after last year’s Hajj stampede which, according to foreign officials, killed roughly 2,300 people. Iran reported the largest number of victims, at 464.

Fear of getting caught is not enough to deter Abu Ahmed and up to 200,000 other illegal pilgrims from attending this year’s haj in Makkah, despite a clampdown by the Saudi authorities aimed at preventing deadly overcrowding.

Saudi regulations limit visits to once every five years for the most likely group of repeat pilgrims, those coming from inside the kingdom and especially its population of 8 million mostly South Asian resident workers. The tougher approach has pushed down illegal numbers from half a million in previous years to between 100,000 and 200,000 this year, Makkah’s mayor Osama bin Fadl Al-Bar said, but he warned that experienced smugglers continue to ferry the faithful around checkpoints unnoticed.